/**
SpagoBI - The Business Intelligence Free Platform
Copyright (C) 2005-2008 Engineering Ingegneria Informatica S.p.A.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
**/
package it.eng.spagobi.security;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.Security;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Encoder;
/**
* @author Franco vuoto (franco.vuoto@eng.it)
* @author Alessandro Pegoraro (alessandro.pegoraro@eng.it)
*
*/
public class AsymmetricProviderSingleton {
private static final String PROVIDER = "HmacSHA1";
private static AsymmetricProviderSingleton _instance = null;
private Mac mac = null;
public static AsymmetricProviderSingleton getInstance() throws InvalidKeyException, NoSuchAlgorithmException {
if (_instance == null) {
synchronized (AsymmetricProviderSingleton.class) {
if (_instance == null)
_instance = new AsymmetricProviderSingleton();
}
}
return _instance;
}
private AsymmetricProviderSingleton() throws InvalidKeyException,NoSuchAlgorithmException {
Provider sunJce = new com.sun.crypto.provider.SunJCE();
Security.addProvider(sunJce);
SecretKey key = new SecretKeySpec(keyBytes, PROVIDER);
mac = Mac.getInstance(PROVIDER);
mac.init(key);
}
public String enCrypt(String value) {
byte[] result = mac.doFinal(value.getBytes());
BASE64Encoder encoder = new BASE64Encoder();
String encoded = encoder.encode(result);
return encoded;
}
private static byte[] keyBytes =
{
(byte) 0x06,
(byte) 0xAB,
(byte) 0x12,
(byte) 0xE4,
(byte) 0xE4,
(byte) 0xE4,
(byte) 0xE4,
(byte) 0x12,
(byte) 0x13,
(byte) 0xE4,
(byte) 0x12,
(byte) 0xCC,
(byte) 0xEF,
(byte) 0xE4,
(byte) 0x06,
(byte) 0x07,
(byte) 0xE4,
(byte) 0x07,
(byte) 0x12,
(byte) 0xCD,
(byte) 0xE4,
(byte) 0x07,
(byte) 0xFE,
(byte) 0xFF,
(byte) 0x07,
(byte) 0xE4,
(byte) 0x08 };
}